Direct-current motor driving device

Abstract

The invention discloses a direct-current motor driving device. The direct-current motor driving device is characterized by comprising a chip module, a power supply module and an H-bridge circuit module, wherein the chip module is used for controlling output of an output end of the chip module according to pulse width modulation PWM signals; the output end of the chip module comprises a first output end P1, a second output end P2, a third output end P3 and a fourth output end P4; the H-bridge circuit module is used for controlling a motor to rotate forwards or reversely and adjusting a rotationspeed according to output signals of the output end of the chip module; the power supply module is used for supplying power for the chip module and the H-bridge circuit module. Compared with the prior art, the direct-current motor driving device disclosed by the invention can effectively solve the problem of serious resource occupancy of a main controller port only by needing a PWM port.

Description

technical field [0001] The invention relates to the technical field of motor drive, in particular to a DC motor drive device. Background technique [0002] Typically, the control of a DC motor requires the use of a motor driver. The motor driver mainly realizes two functions of motor control: first, controls the steering of the motor. Second, control the speed of the motor. [0003] In order to realize the above two functions, it is necessary to provide two logic level signals to the motor driver to realize the positive and negative rotation of the motor through different high and low level logic signals; and one enable signal to control different speeds of the motor. In this way, at least 3 output ports (2 I / O digital ports and 1 PWM output port) on the main controller must be occupied to control a motor. As a result, the limited host controller port resources are seriously occupied. In the case of controlling multiple motors, there will be insufficient ports; in additio...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a DC motor drive device to solve the problem that the port resources of the main controller are seriously occupied due to the occupation of multiple ports of the main controller in the prior art, and the motor driver in the prior art In the case of low voltage, the loss is large, and in order to reduce the loss, an additional heat sink is required, which makes the volume of the motor driver too large.

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